318 Stroker Kits | Mopar Dodge 318 and 5.2 Magnum 390 Stroker Kit

Mopar 318 and 5.2 magnum engines are great, dependable engines that first appeared in 1957. They are not known as high performance engines as built by the factory. The good news is that a 318 390 stroker kit gives them a huge increase in performance.Our 5.2 Magnum / 318 stroker kits will improve the performance and durability of your 318 considerably. Depending on which stroke crank and final bore size you choose to use, you can build 318 stroker motors of 370, 390, 396 or even 402 cubic inches.

A 318 can do everything from power a street work truck to being an all out drag, oval track or road racing engine depending on how it is built. Many people tend to overlook the 318 as a high performance engine, which is a shame as it offers many benefits, it is light, compact and easy to come by and relatively inexpensive

If you are building a high performance or racing 318, but do not want to buy a complete stroker kit, we have the individual parts available on these pages of our site:

• 318 Pistons
• 318 H-Beam Connecting Rods
• 318 Stroker Cranks

The 318 A, LA and 5.2 L Magnum series engines all use the same stroker kits since the bottom end rotating assembly of these engines are all the same. The pistons vary as needed to provide the desired compression ratio with the cylinder heads you will be using. We have a wide range of 318 stroker applications covered with our kits. Our 318 stroker kits are available in street / strip and full competition configurations. Shop and buy the best 318 stroker kits here. We offer technical assistance, great customer service, quick shipping and reasonable prices.

PLEASE NOTE: We have a huge number of optional cranks, rods, and pistons available to assemble the 318 stroker kit that best meets your requirements. We are working to get all of the different options listed on our website but it will take some time to complete. In the mean time, please contact us for assistance and we will be happy to help you with the best kit to meet your exact requirements. Thank you for your patience and understanding.

For stock stroke 318 rotating assembly kits please click here: Mopar 318 Rotating Assembly Kits

 

318 390 Stroker Kit Contents - What is included?

Our 318 Mopar stroker engine kits offer a great combination of performance, dependability and affordability. All of our kits are intended for use as an internal balance assembly. Each of these kits includes:

318 Street / Strip Stroker Engine Kits

• Scat or Eagle cast steel crankshaft rated for up to 500 hp
• Eagle I beam connecting rod set
• Icon Forged Pistons, dish or flat top
• Premium piston ring set
• King or Clevite P series main bearings
• King or Clevite P series rod bearings

318 Competition Racing Stroker Motor Kits

• Molnar Technologies or K1 Technologies 4340 forged crank
• Molnar Technologies or K1 Technologies 4340 Billet H beam rods with ARP2000 bolts
• Wiseco or Icon forged pistons
• Premium moly file fit piston ring set
• KING, ACL or Clevite Performance series main bearings
• KING, ACL or Clevite Performance series rod bearings

See the specification list for the exact parts included in any particular kit. We use only top quality performance and racing parts in our kits. If you have any questions about the parts included in a kit please do not hesitate to contact us for kit content confirmation.

Chrysler Dodge Plymouth Mopar 318 / 5.2 Magnum Stroker Kit Specifications & Pricing

Street / Strip 318 Stroker Kits For street, towing and mild performance use Cast steel Scat or Eagle stroker crankshaft rated for up to 500hp Eagle I beam rods, 6.123 in. long, .984 pin size Icon Forged piston and ring set Stock 318 bore size is 3.910 in. Stock stroke is 3.310 in. The crank and rods in these kits are rated for up to 500 hp, for higher output engines or racing we strongly suggest you choose one of our competition 318 stroker kits Must be balanced before installation, intended for internal balance use CID = stroker engine displacement size
					Compression ratio with chamber volume of
CID	Bore Size	Crankshaft Type & Stroke	Rod Length and Type	Piston	60cc	64cc	68cc	Kit #
390	3.940 .030 over	cast steel 4.000 stroke	6.123 I-beam	forged step dish -23cc	9.8	9.4	9.1	CES318C4IKR-30
392	3.950 .040 over	cast steel 4.000 stroke	6.123 I-beam	forged step dish -23cc	9.8	9.4	9.1	CES318C4IKR-40
396	3.970 .060 over	cast steel 4.000 stroke	6.123 I-beam	forged step dish -23cc	9.9	9.5	9.2	CES318C4IKR-60
390	3.940 .030 over	cast steel 4.000 stroke	6.123 I-beam	flat top -4.7cc	12	11.4	11	CES318C4IKF-30
392	3.950 .040 over	cast steel 4.000 stroke	6.123 I-beam	flat top -4.7cc	12	11.4	11	CES318C4IKF-40
396	3.970 .060 over	cast steel 4.000 stroke	6.123 I-beam	flat top -4.7cc	12.1	11.5	11.1	CES318C4IKF-60

 

Mopar Plymouth Dodge 318 & 5.2L Magnum Engine COMPETITION Stroker Kits Premium 318 high performance and racing stroker kits. These kits feature forged cranks, forged pistons, billet rods with ARP 2000 bolts, moly rings and ACL or Clevite race bearings. If you are serious about getting maximum torque, horsepower and durability from your stroker 318 engine, then these kits include the parts you need. For high performance and racing applications Molnar Technologies 4340 Forged steel Crankshaft Molnar Technologies 4340 Billet H beam rods with ARP2000 bolts, .984 pin size Icon Forged piston and ring set Stock 318 bore size is 3.910 in. Stock stroke is 3.310 in. Must be balanced before installation, intended for internal balance use CID = stroker engine displacement size
					Compression ratio with chamber volume of
CID	Bore Size	Crankshaft Type & Stroke	Rod Length and Type	Piston	60cc	64cc	68cc	Kit #
390	3.940 .030 over	4340 forged steel 4.000 stroke	6.123 H-Beam	forged step dish -23cc	9.8	9.4	9.1	CES318F4HKR-30 $3195.00 $2971.35
392	3.950 .040 over	4340 forged steel 4.000 stroke	6.123 H-Beam	forged step dish -23cc	9.8	9.4	9.1	CES318F4HKR-40 $3195.00 $2971.35
396	3.970 .060 over	4340 forged steel 4.000 stroke	6.123 H-Beam	forged step dish -23cc	9.9	9.5	9.2	CES318F4HKR-60 $3195.00 $2971.35
390	3.940 .030 over	4340 forged steel 4.000 stroke	6.123 H-Beam	flat top -4.7cc	12	11.4	11	CES318F4HKF-30 $3195.00 $2971.35
392	3.950 .040 over	4340 forged steel 4.000 stroke	6.123 H-Beam	flat top -4.7cc	12	11.4	11	CES318F4HKF-40 $3195.00 $2971.35
396	3.970 .060 over	4340 forged steel 4.000 stroke	6.123 H-Beam	flat top -4.7cc	12.1	11.5	11.1	CES318F4HKF-60 $3195.00 $2971.35

 

Mopar Plymouth Dodge 318 & 5.2L Magnum Engine ULTIMATE COMPETITION Stroker Kit Rotating Assemblies Ultimate 318 racing stroker kits include the same great parts as our competition kits listed above. The difference is that the ultimate kits include Diamond Pistons brand forged racing pistons and plasma moly file fit piston ring sets. If you are serious about getting the ultimate performance from your 318 stroker motor, then these kits include the components to help you win more races. For serious performance and racing applications Molnar Technologies 4340 Forged steel Crankshaft Molnar Technologies 4340 Billet H beam rods with ARP2000 bolts, .984 pin size Diamond Pistons brand Forged Racing Pistons Plasma moly file fit piston rings Stock 318 bore size is 3.910 in. Stock stroke is 3.310 in. Must be balanced before installation, intended for internal balance use CID = stroker engine displacement size
					Compression ratio with chamber volume of
CID	Bore Size	Crankshaft Type & Stroke	Rod Length and Type	Piston	60cc	64cc	68cc	Kit #
390	3.940 .030 over	4340 forged steel 4.000 stroke	6.123 H-Beam	forged dish -16.7cc	10	9.5	9.2	CES318F4HDR-30
390	3.940 .030 over	4340 forged steel 4.000 stroke	6.123 H-Beam	flat top -6.8cc	11.4	10.9	10.4	CES318F4HDF-30

 

If you do not see the 318 Stroker kit with the specs you need:

We offer a large variety of 318 stroker rotating assemblies, Dodge, Plymouth, Mopar 318 stroker kits, and Dodge 5.2L Magnum stroker kits. We also offer custom piston options with these stroker kits. If you do not see a kit that includes the items you want, or you need a different bore size or compression piston, please contact us and we will be happy to help you with a custom configured 318 stroker kit.

318 Mopar Rotating Assemblies Stock Stroke Kits for 5.2 Magnum / 318

If you are rebuilding a 318 Mopar and want a stronger rotating assembly, but do not want to go to a stroker set up, we also have stock stroke 318 rotating assemblies available. Contact us for information.

Links to stroker kit brand catalog index pages on our website:

Molnar Technologies Rods and Cranks | K1 Technologies Cranks and Rods

 

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